Standard Roof Overhang Northern Michigan

Figure r804 3 2 1 2 gable endwall overhang.

Standard roof overhang northern michigan.

Roof pitch is a measurement of a roof s slope expressed as a ratio. Overhangs are common in most house designs providing protection against both wind and rain. The siding underneath the overhang is known as the soffit. Although there is no single standard roof pitch used on all sloped roofs factors such as roofing materials and local climate help to determine the appropriate range of pitches for a given building.

R value is a measure of insulation s ability to resist heat traveling through it. 12 oz sq ft for preformed. Use our michigan ground snow loads map to easily determine the ground snow load 2009 michigan building code. Astm b370 minimum 16 oz sq ft and 12 oz sq ft high yield copper for metal sheet roof covering systems.

Recommended home insulation r values. The length of the overhang depends primarily on the climate. The state has amended the snow load requirements of the 2009 ibc figure 1608 2 and the 2009 irc figure r301 2 5 table r301 2 1 and table. Weather and not properly protected by a roof eave or similar covering table r802 11 required strength of truss or rafter connections to resist wind uplift forcesa b c e f pounds per connection r804 3 2 1 1 eave overhang.

Eave overhangs shall not exceed 24 inches 610 mm measured horizontally. Insulation level are specified by r value. Astm a653 g90 zinc coated. They can also include certain architectural features that make overhangs more than just functional parts of the home.

Roof overhangs are the amount that the roof hangs over the top of the siding in residential home construction. Rise multiplier rise multiplier 1 to 12 1 01 6 to 12 1 12 2 to 12 1 01 8 to 12 1 20 3 to 12 1 03 12 to 12 1 42 4 to 12 1 06 15 to 12 1 60 5 to 12 1 08 18 to 12 1 80. In designing the overhanging part of a. Load limits on the roof of a building.

You can click on the map below to find the design ground snow load for that location. Roof covering type standard application rate thickness. In order to stay intact and in place a roof must be able to resist loads both permanent and temporary that are pushing. The construction of a roof overhang is one important way that homeowners can protect the exterior of their home and preserve its value.

Astm a240 300 series alloys.